Design analysis and optimization of a hydraulic gate turbine for power production from ultra-low head sites

Shamsuddeen, Mohamed Murshid; Ma, Sang-Bum; Park, No-Hyun; Kim, Kyung Min; Kim, Jin‐Hyuk

doi:10.1016/j.energy.2023.127371

Cited by 7 publications

(1 citation statement)

References 40 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The development of high-head energy sources that provide high returns is almost complete, resulting in an urgent need to expedite the development of low-head energy sources to meet the ever-increasing demand for energy [3]. In agriculture, low-head development often involves installing bulb units at irrigation canal intakes, helping achieve the dual carbon goals and solve the issue of rural electricity demand, making it a promising and scalable approach [4][5]. Cavitation often causes instability of vibration and noise during the operation of the turbine, potentially endangering the safety and reliability of the unit [6].…”

Section: Introductionmentioning

confidence: 99%

Correlation analysis of cavitation-induced pressure pulsation and vibration in a bulb turbine

Li,

Feng,

Zhu

et al. 2023

J Hydrodyn

View full text Add to dashboard Cite

Cavitation is one of the primary factors leading to the destabilisation of tubular turbines. To enhance their stability, this study examines the effects of runner cavitation on draft tube pressure fluctuations and vibration in tubular turbines through experimental methods. With varying cavitation coefficients, a synchronous test system, including a high-speed camera, vibration acceleration sensors and pressure pulsation sensors, is applied to obtain cavitation images of the runner, and vibration and internal fluid pressure pulsation data of the draft tube. The results show that the correlated component of pressure pulsation signals during the cavitation process is the synchronous pressure pulsation of 16 fn. With the development of cavitation, the amplitude of synchronous pressure pulsation increases first and then decreases. Cavitation enhances the high-frequency vibration of the runner chamber wall and the RMS of the vertical vibration component IMF3 and the horizontal vibration components IMF2 and IMF4 are linearly negatively correlated with the cavitation coefficient. The associated component between cavitation-induced vibration and pressure pulsation signal is 16 fn and its harmonics. In the process of cavitation, pressure pulsation plays a leading role in vibration.

show abstract